Thread: exhausting issues

The red silicon will be Loctite RTV high temp, used to use it on the exhaust of a Lotus motor I ran years back.

Originally Posted by Fattima

The red silicon will be Loctite RTV high temp, used to use it on the exhaust of a Lotus motor I ran years back.

Ditto!
My one and only 'quiet' RV8 was my last one .. an '83 VandenPlas.
My mechanic gave me a tube of that Loctite high temp red/orange coloured stuff, and it held for at least 6-12 months .. longer than just about anything else I ever tried on any of my V8's(about 10 of them, at least).

It's the only silicon goo I use now, ever since then.

run the "muffler" up the front and straight pipe out the rear, otherwise the drone will make you do it a second time....

Thanks Guys,

I'll chase up a tube of loctite high temp silicon. I better grab another loctite anti-seize stick for the bolts too (I have a big tub of copper type anti-seize here, but I'm pretty sure you shouldn't use that on alloy).

I've run a resonator on the rear for years ..... and it sounds great. I've always found running no resonators on cars made them drone on the highway. There is only one way to find out I guess

seeya,
Shane L.

Originally Posted by DoubleChevron

.....

I've run a resonator on the rear for years ..... and it sounds great. I've always found running no resonators on cars made them drone on the highway. There is only one way to find out I guess

seeya,
Shane L.

Same here, on my V8s.
I started with P6s, and then after a couple, I got my 79 RRC.
So even with the experience of the P6 V8s, idiot me still got a exhaust system tweak, with rear resonator removed.
On my first drive out to Lake Eyre, I was kicking myself madly all the way.

And you'd think that I'd have learned the lesson after all these years, but of course on my D1, my mechanic reckoned my mufflers may be blocked, turbo a bit weak.
So I duly booked into exhaust place, he asked me what I wanted, I said new centre, no rear! Doh! on the drive home, I again realised my stupidity .. a couple days later I rocked up and asked him to fit a resonator on the rear.

Originally Posted by AK83

Same here, on my V8s.
I started with P6s, and then after a couple, I got my 79 RRC.
So even with the experience of the P6 V8s, idiot me still got a exhaust system tweak, with rear resonator removed.
On my first drive out to Lake Eyre, I was kicking myself madly all the way.

And you'd think that I'd have learned the lesson after all these years, but of course on my D1, my mechanic reckoned my mufflers may be blocked, turbo a bit weak.
So I duly booked into exhaust place, he asked me what I wanted, I said new centre, no rear! Doh! on the drive home, I again realised my stupidity .. a couple days later I rocked up and asked him to fit a resonator on the rear.

Oh, I should say I run the rear resonator *only* and remove the middle muffler ..... If I'm going to pay to run a V8 ... I want to hear the thing!

seeya
Shane L.

On my d1 the muffler and resi where shagged so i had a straight pipe for a few month's. Sounded awsome but the volume was OTT way too loud, you could see windows moving it was that loud. The rover 8 being having the flathead firing order just sounds awesome, you can hear everything the engine is doing. But all the consequences to follow and the loudness isnt worth it.
So i had a redback high flow muffler installed in the centre, sounded almost as good but was still too much on long drives for the wife and baby.
So before going away I had a hotdog installed at the rear just after the diff (before the original resonator) and then just a straight section of tailpipe. Sound wise im pretty happy its got a good low end grunt and that high end rover scream that makes your pants wet. Plenty enough volume when you want it, nice burble at idle and that throaty sound when you open the throtlle. BUT best of all cruising along the free way all the noise and drone is gone! You can still hear the engine but its a nice purr now at 2000-2500rpm the tyres are probably louder now. And after driving 1300ks straight through twice I wouldn't have it any other way.
Boy racer stuff aside, performance wise the combo i have now is best out of the 3. Fuel economy is "better" and probably gave back a couple of ponies.
OFFROAD however the stock exhaust was best. Withought the back pressure from the exhaust going downhill in an auto is dangerous, you may as well roll down in N. The revs dont pick up and the engine basically idles as you roll faster. Since adding the mufflers the revs pick up much better and you get most compression braking back but still not the same as the stock exhaust. Accelerating and transbrake downhill is the key but its weird to get used too, it goes against every instinct but it works really well.
I now have plenty of manifold leaks to chase up now that i can hear them 🤣
Cheers Jim

Another possible use for Combustion Heater Door Gasket/Rope adhesive.

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